84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
/* $NetBSD: disklabel.h,v 1.6 2000/03/13 23:52:26 soren Exp $ */
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/*
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* Copyright (c) 1994, 1999 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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#define LABELSECTOR 0 /* sector containing label */
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#define LABELOFFSET 64 /* offset of label in sector */
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#define MAXPARTITIONS 8 /* number of partitions */
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#define RAW_PART 2 /* raw partition: xx?c */
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#include <sys/dkbad.h>
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/* Just a dummy */
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struct cpu_disklabel {
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struct dkbad bad; /* bad-sector information */
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};
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/*
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* Alpha (disk, but also tape) Boot Block. See Section (III) 3.6.1 of the
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* Alpha Architecture Reference Manual.
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*/
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struct boot_block {
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u_int64_t bb_data[63]; /* data (disklabel, also as below) */
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u_int64_t bb_cksum; /* checksum of the boot block,
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* taken as u_int64_t's
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*/
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};
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#define bb_secsize bb_data[60] /* secondary size (blocks) */
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#define bb_secstart bb_data[61] /* secondary start (blocks) */
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#define bb_flags bb_data[62] /* unknown flags (set to zero) */
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#define BOOT_BLOCK_OFFSET 0 /* offset of boot block. */
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#define BOOT_BLOCK_BLOCKSIZE 512 /* block size for sec. size/start,
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* and for boot block itself
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*/
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#define CHECKSUM_BOOT_BLOCK(bb,cksum) \
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do { \
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const struct boot_block *_bb = (bb); \
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u_int64_t _cksum; \
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int _i; \
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\
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_cksum = 0; \
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for (_i = 0; \
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_i < (sizeof _bb->bb_data / sizeof _bb->bb_data[0]); \
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_i++) \
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_cksum += _bb->bb_data[_i]; \
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*(cksum) = _cksum; \
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} while (0)
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#endif /* _MACHINE_DISKLABEL_H_ */
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